How Dogs Went from Pests to Pets

For tens of thousands of years, dogs have been part of the human community. Recent research suggests they were first domesticated by European hunter-gatherers between 18,800 and 32,100 years ago, but it’s also possible dogs were domesticated earlier elsewhere around the globe. Domestication might even have arisen simultaneously in different human populations. After all, people always have garbage. And according to Brian Hare of Duke University’s Canine Cognition Center, it was trash that brought us together with man’s best friend.

 

Lunar glow remains a mystery

NASA Clemantine photo of lunar glow in 1994

Just before sunrise, Apollo 17 astronaut Eugene Cernan spotted a strange glow circling the horizon of the moon. He was expected to see some light from the sun, rays from the outer corona just as in sunrises on earth, but…

Ice plant Invasion

ice plant close-up 2

From Sonoma to San Diego, a dense spread of fleshy green leaves mats the California coastline. The pink and yellow blooms brighten grey beaches, and speckle sunny sands as frequently as people and gulls do. They’re pretty, pervasive – and…